Change the gamut warning color, Adjusting image color and tone, Levels overview – Adobe Photoshop CS4 User Manual
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USING PHOTOSHOP CS4
Color and tonal adjustments
Last updated 1/10/2010
Change the gamut warning color
1
Do one of the following:
•
(Windows) Choose Edit > Preferences
> Transparency & Gamut.
•
(Mac
OS) Choose Photoshop
> Preferences
> Transparency & Gamut.
2
Under Gamut Warning, click the color box to display the Color Picker. Then choose a new warning color, and
click
OK.
For best results, use a color that is not already present in the image.
3
Enter a value in the Opacity box, then click
OK.
Use this option to reveal more or less of the underlying image through the warning color. Values can range from 1 %
to 100%.
Original image, and out-of-gamut colors preview with blue selected for gamut warning color
Adjusting image color and tone
Levels overview
You use the Levels adjustment to correct the tonal range and color balance of an image by adjusting intensity levels of
image shadows, midtones, and highlights. The Levels histogram is a visual guide for adjusting the image key tones. For
more information on how to read a histogram, see “
You can save Levels settings as a preset, then apply them to other images. See “
and “
Levels dialog box
A. Shadows B. Midtones C. Highlights D. Apply Auto Color Correction
D
C
B
A